I'd go further than this - consciousness only exists in social context. Or in a dynamic if you prefer. Children raised alone, or suffering extreme neglect (e.g.: infamous Genie case) suffer enormous cognitive impairments, including language acquisition and theory of mind. Prisoners kept in isolation frequently descend into psychosis and suffer measurable neuronal shrinkage. Even moderate social isolation is correlated with depression.

Consciousness emerges and is maintained in the context of other people - and not just individuals but communities whose language, techniques of adaptive living (i.e.: traditions), and storytelling about the word, are carried intra-individually within clan and affiliate groups. In the postmodern era those communities can be parasocial or virtual to an extent, fictive or reenacted, but they're not optional for the continued coherence of self.

There is no 'I' except in relation to the other, moreover the self doesn't become fully individuated without being witnessed and held by the other - caregivers in early childhood, friends in adolescence, social roles in adulthood.

All of this would be impossible if our phenomenology wasn't broadly similar. All societies have identified social roles for those few whose inner world isn't commensurate with the collective - in modernity we call them schizophrenics.